Workpiece holding square



FIG. 1 is a front, left and top perspective view of a 1^(st) embodiment of the workpiece holding square;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in FIGS. 1-7 illustrate features of the workpiece holding square that form no part of the claimed design. 

CLAIM The ornamental design for a workpiece holding square, as shown and described. 